Here's all the locations of the raccoons hope this helped out!



Are you stuck look below for a description:
Raccoon Location 1: Containment
Look behind the servers, in the room with the curved sofas, before Birkin's lab.

Raccoon Location 2: Corruption
You will at some point come to a room with statues. Clear the room and head to the next room where you will need to use the computer. Take the stairs up, turn left and look for double doors leading to another set of stairs. The racoon is at the top.

Raccoon Location 3: Lights Out
When you get to the park, keep to the right hand side and it'll be next to the sewer entrance.

Raccoon Location 4: Gone Rogue
When you get to the room full of green tanks, it'll be right in the center of the room, between the tanks.

Raccoon Location 5: Expendable
In the office, behind the desk on the cupboard. It'll be next to the flag.

Raccoon Location 6: Redemption
Take the elevator down. On the second time that it stops, it'll be in the back room.

Raccoon Location 7: End Of The Line
Near the end of the level. Let the zombies break through the fence and walk towards the ladder. Don't go up. Follow the train around to the right and it'll be at the end.